smtp login command examples

smtp login command examples

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SMTP Commands Reference (covers HELO/EHLO, MAIL, RCPT ...

    https://www.samlogic.net/articles/smtp-commands-reference.htm
    The example below shows how to combine the STARTTLS and AUTH LOGIN command to make a secure login to an e-mail server (S = Server, C = Client): S: 220 smtp.server.com Simple Mail Transfer Service Ready C: EHLO client.example.com S: 250-smtp.server.com Hello client.example.com S: 250-SIZE 1000000 S: 250-AUTH LOGIN PLAIN CRAM-MD5 S: 250-STARTTLS
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    https://www.samlogic.net/articles/smtp-commands-reference.htm

Connecting to Your SMTP Server with the SMTP-AUTH Login ...

    https://petri.com/smtp-authentication/
    However, since most modern mail servers will not allow for unauthenticated SMTP connections to relay mail through them, we must now add the SMTP-AUTH command to the test procedure. The SMTP-AUTH...
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SMTP Commands and Sample Sessions - Voice Gateways

    https://www.ccexpert.us/voice-gateways/smtp-commands-and-sample-sessions.html
    However, an improved version of SMTP known as Extended Simple Mail Transfer Protocol (ESMTP) is an alternative that has more features and a greater versatility through added service extensions. ESMTP uses the command EHLO rather than HELO as an identification command. An example of an EHLO command and response session is shown in Example 6-2.
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    https://www.ccexpert.us/voice-gateways/smtp-commands-and-sample-sessions.html

SMTP Commands and Response Codes Guide | Mailtrap

    https://mailtrap.io/blog/smtp-commands-and-responses/
    At the same time, the SMTP connection remains open and is ready for a new mail transaction. Example: RSET QUIT The QUIT command send the request to terminate the SMTP session. Once the server responses with 221, the client closes the SMTP connection.
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    https://mailtrap.io/blog/smtp-commands-and-responses/

AUTH Command and its Mechanisms (PLAIN, LOGIN, CRAM-MD5 ...

    https://www.samlogic.net/articles/smtp-commands-reference-auth.htm
    One common method to login to an SMTP server is to use the PLAIN mechanism. The example below shows how AUTH PLAIN can be used to login: S: 220 smtp.server.com Simple Mail Transfer Service Ready C: EHLO client.example.com S: 250-smtp.server.com Hello client.example.com S: 250-SIZE 1000000 S: 250 AUTH LOGIN PLAIN CRAM-MD5 C: AUTH PLAIN S: 334
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    https://www.samlogic.net/articles/smtp-commands-reference-auth.htm

Blog · How to test SMTP servers using the command-line ...

    https://halon.io/blog/how-to-test-smtp-servers-using-the-command-line/
    There are several command-line tools that can be used for this but here I'm using nslookup as well as dig as examples. # nslookup -type=mx example.local (cut) example.local mail exchanger = 10 vsp1.example.local. example.local mail exchanger = 10 vsp2.example.local.
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    https://halon.io/blog/how-to-test-smtp-servers-using-the-command-line/

SMTP AUTH: SMTP authentication | the right protocol ...

    https://www.ionos.com/digitalguide/e-mail/technical-matters/smtp-auth/
    The server will offer a selection of authentication mechanisms as shown in the example above where you can select, for example, LOGIN by entering the command "AUTH LOGIN" Now comes the actual test: after the commands ' MAIL FROM ' and ' RCPT TO ', enter a made-up sender and recipient address , i.e. one that does not exist.
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    https://www.ionos.com/digitalguide/e-mail/technical-matters/smtp-auth/

HowTo: Send Email from an SMTP Server using the Command ...

    https://www.shellhacks.com/send-email-smtp-server-command-line/
    The SMTP (Simple Mail Transfer Protocol) is an Internet standard for electronic mail (Email) transmission across Internet Protocol (IP) networks. This tutorial shows how to connect to SMTP mail server and send an Email using the 'telnet' command. Step 1: Open a connection from your computer to an SMTP mail server $ telnet smtp.domain.ext 25 […]
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    https://www.shellhacks.com/send-email-smtp-server-command-line/

How to Test SMTP AUTH using Telnet - NDCHost

    https://www.ndchost.com/wiki/mail/test-smtp-auth-telnet
    Below are instructions on how to test SMTP AUTH against a mail server using Telnet and entering the commands by hand.. The first thing you need to do is get a base64 encoding of your username and password. There are a couple ways to do this, the example below uses Perl: . perl -MMIME::Base64 -e 'print encode_base64("username");' perl -MMIME::Base64 -e 'print encode_base64("password");'
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    https://www.ndchost.com/wiki/mail/test-smtp-auth-telnet

Sending Email with SMTP Authentication via Telnet or ...

    http://woshub.com/sending-email-via-telnet-using-smtp-authentication/
    For example, such a response from the SMTP server indicates that 3 authentication protocols are supported. 250 AUTH GSSAPI DIGEST-MD5 PLAIN The basic authentication methods PLAIN and LOGIN use BASE64 encoding of the name and password. The difference between them is that for the PLAIN method the login and password are sent in one line.
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    http://woshub.com/sending-email-via-telnet-using-smtp-authentication/

SMTP Commands - GeeksforGeeks

    https://www.geeksforgeeks.org/smtp-commands/
    SMTP transfers this message from client MTA to the server MTA. To send a mail, SMTP is used two times: one between sender and sender's mail server and the other between the two mail servers. SMTP Commands : These commands are sent from the client to the server. Each command consists of a keyword followed by zero or more arguments.
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    https://www.geeksforgeeks.org/smtp-commands/

SMTP 101: Manual SMTP Sessions - Atmail - email

    https://www.atmail.com/blog/smtp-101-manual-smtp-sessions/
    Now I issue some new commands, for example the 'EHLO' we introduced earlier. 250 HELP EHLO example 250-us11-010mrc.dh.atmailcloud.com Hello example [101.165.155.220] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-AUTH LOGIN PLAIN 250-CHUNKING 250 HELP You can see, for obvious reasons, that STARTTLS is now missing. Authenticating to SMTP
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    https://www.atmail.com/blog/smtp-101-manual-smtp-sessions/

SMTP Commands: all you need to know

    https://serversmtp.com/smtp-commands/
    EHLO An alternative command to start the conversation, underlying that the server is using the Extended SMTP protocol. MAIL FROM With this SMTP command the operations begin: the sender states the source email address in the "From" field and actually starts the email transfer. RCPT TO
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    https://serversmtp.com/smtp-commands/

How to check SMTP connection from Command Line ( Linux ...

    https://netcorecloud.com/tutorials/smtp-connection-from-command-line/
    Step 2: Checking The SMTP Connection From Command Line Using Ncat Or Nc. Because ncat or nc has various functionality from the list of functionality we will just check the connection using the following command. nc -v -u smtp.example.com 587. If it is successfully connected.
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    https://netcorecloud.com/tutorials/smtp-connection-from-command-line/

How to test SMTP Authentication and StartTLS - Sysadmins ...

    https://www.saotn.org/test-smtp-authentication-starttls/
    Use EHLO to let the SMTP server print out the supported verbs: EHLO there 250-smtp.example.com 250-PIPELINING 250-SIZE 52428800 250-ETRN 250-AUTH PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN Here you notice AUTH PLAIN LOGIN as a log-in method. The SMTP mail server supports the authentication mechanism you want.
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    https://www.saotn.org/test-smtp-authentication-starttls/

SMTP Commands: How to Send Email Using Telnet | ITGeared

    https://www.itgeared.com/smtp-commands-how-to-send-email-using/
    If you have ever needed to run a test to verify if your SMTP server can relay email, a simple way of doing so without having to load another SMTP server or run an SMTP client application is to use the TELNET command.. This article provides a quick summary of the common SMTP commands and sequence used by the SMTP Protocol to transfer email via the TELNET command.
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    https://www.itgeared.com/smtp-commands-how-to-send-email-using/

Command Line SMTP.

    https://www.commandlinesmtp.com/
    Command Line SMTP supports both inline body (i.e. the body text is passed as a parameter) or the body can be set in a separate text (or HTML) file & the file path passed as a parameter instead. Command Line SMTP is perfect for sending scripted alerts or reports from automated scheduled tasks from within a batch file running on a server.
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    https://www.commandlinesmtp.com/

smtp - Unix, Linux Command - Tutorialspoint

    https://www.tutorialspoint.com/unix_commands/smtp.htm
    The SMTP client time limit for sending the SMTP RCPT TO command, and for receiving the server response. smtp_data_init_timeout (120s) The SMTP client time limit for sending the SMTP DATA command, and for receiving the server response. smtp_data_xfer_timeout (180s) The SMTP client time limit for sending the SMTP message content.
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    https://www.tutorialspoint.com/unix_commands/smtp.htm

email - Smtp Auth Login - Stack Overflow

    https://stackoverflow.com/questions/46153295/smtp-auth-login
    Here is another example: Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 localhost ESMTP service ready ehlo localhost 250-localhost 250-STARTTLS 250-AUTH PLAIN LOGIN 250-PIPELINING 250 8BITMIME auth login bXl1c2VybmFtZQ 334 UGFzc3dvcmQ6 bXlwYXNzd29yZA 500 Unrecognized command
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    https://stackoverflow.com/questions/46153295/smtp-auth-login

16 Command Examples to Send Email From The Linux Command Line

    https://blog.edmdesigner.com/send-email-from-linux-command-line/
    In order to connect to an SMTP account you need to provide the server -s, the user -au, the password -ap and the address -t (where you want to send your mail) flags. The -tls flag is also important if you connect on port 587. swaks --to [email protected] -s smtp.gmail.com:587 -tls -au -ap
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    https://blog.edmdesigner.com/send-email-from-linux-command-line/

Email - How to verify your SMTP connection and parameters ...

    https://datacadamia.com/marketing/email/smtp_telnet
    Basic telnet does not support SSL or TLS. You have to use openssl or stunnel to verify your smtp parameters. telnet smtp.gmail.com 587 220 mx.google.com ESMTP 10sm8014744eyd.42 ehlo hostname.com 250-mx.google.com at your service, [83.83.223.119] 250-SIZE 35651584 250-8BITMIME 250-STARTTLS 250-ENHANCEDSTATUSCODES 250 PIPELINING AUTH LOGIN 530 5.7.0 Must issue a STARTTLS command first ...
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    https://datacadamia.com/marketing/email/smtp_telnet

UTL_SMTP - Oracle Help Center

    https://docs.oracle.com/en/database/oracle/oracle-database/19/arpls/UTL_SMTP.html
    Since the SMTP server may change the authentication schemes it supports after the SMTP connection is secured by SSL/TLS after the STARTTLS command (for example, adding PLAIN and LOGIN ), the caller must call the EHLO Function and Procedure again for UTL_SMTP to update the list after the STARTTLS Function and Procedure is called. Examples
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Sending email - Everything curl

    https://everything.curl.dev/usingcurl/smtp
    When sending SMTP with curl, there are two necessary command line options that must be used. You need to tell the server at least one recipient with --mail-rcpt . You can use this option several times and then curl will tell the server that all those email addresses should receive the email.
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    https://everything.curl.dev/usingcurl/smtp

Tutorial: SMTP Authentication - FEHCom

    https://www.fehcom.de/qmail/smtpauth.html
    Setting up qmail-remote for SMTP Authentication. There are two Use Cases to consider allowing qmail-remote to support SMTP Authentication:. A local user on the system using Authentication: Since no user-interface exists to specify an userid and the uid is not available anymore for qmail-remote the authentication information needs to be bound the the sending address: 'Mail From: '.
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    https://www.fehcom.de/qmail/smtpauth.html

Troubleshooting the SMTP server - IBM

    https://www.ibm.com/docs/SSYMRC_7.0.0/com.ibm.jazz.repository.web.admin.doc/topics/c_troubleshoot_smtp.html
    The following is a sample output when authorization is enabled: C:\temp>telnet smtp.email.example.com 25 Line 1 220 smtp.email.example.com Microsoft ESMTP MAIL Service, Version: 8.5.9600.1 Line 2 6384 ready at Fri, 10 Mar 2017 03:10:48 -0500 Line 3 EHLO smtp.email.example.com Line 4 250-smtp.email.example.com Hello Line 5 250-AUTH=LOGIN Line 6 250-AUTH LOGIN Line 7 250-TURN Line 8 250-SIZE ...
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smtp-commands NSE script — Nmap Scripting Engine documentation

    https://nmap.org/nsedoc/scripts/smtp-commands.html
    smtp.domain. or smtp-commands.domain Define the domain to be used in the SMTP commands. smbdomain, smbhash, smbnoguest, smbpassword, smbtype, smbusername. See the documentation for the smbauth library. Example Usage nmap --script smtp-commands.nse [--script-args smtp-commands.domain=] -pT:25,465,587 Script Output
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    https://nmap.org/nsedoc/scripts/smtp-commands.html

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